html,
body {
    height: 100%;
}
body {
    background-image: radial-gradient(#257065, #003b36);
}
#particles-js {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}

.login-box{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 450px;
    box-sizing: border-box;
    margin-left:auto;
    margin-right:auto;
    transform: translate(-50%, -60%);
    border-radius: 10px;
    overflow: hidden;
    background: #FFFFFF;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.6);
    -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.6);
}
.login-box .top{
    text-align: center;
    color: #FFFFFF;
    background-image: linear-gradient( 135deg, #21d7c5 10%, #16baaa 100%);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 30px;
    height: 80px;
    line-height: 80px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    position: relative;
}
.login-box .top .bg{
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    position: absolute;
}
.login-box .top .bg1{
    width: 100px;
    height: 100px;
    top: 0px;
    right: -30px;
}
.login-box .top .bg2{
    width: 80px;
    height: 80px;
    top: -30px;
    right: -30px;
}

.layui-form{
    padding:20px 50px 50px 50px;
}
.codeimg{max-height:38px;width:100%;cursor:pointer;box-sizing:border-box}

@media screen and (max-width: 767px) {
    .login-box {
        width: 90%;
    }
}